Date datein =(requestgetParameter("statttime"));
requestgetParameter("statttime")取出来的永远是String
statttime参数的时间是什么形式的呢？
如果是 类似 2012-05-07 15:57
String转换成Date的例子:
public class StringToDate {
public static void main(String[] args) {
String s = "2012-05-07 15:57:30";
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
try {
Date d = sdfparse(s);
} catch (ParseException e) {
eprintStackTrace();
Systemoutprintln("日期格式错误");
}
}
}
SimpleDateFormat的构造函数可以传入一个String类型的pattern，表示你要转换的日期时间格式。
引入Calendar和Date类，获得前一天后一天，用Calendar的 add方法， 正数是后几天，负数是前几天。存入数据库，就直接写直连库的方式写吧，很简单，可以参考jdbc了。
创建一个javabean,命名为GetDatejava;
GetDatejava代码如下：
package comJavaBean;
import javautilDate;
import javautilCalendar;
import javatextSimpleDateFormat;
public class GetDate
{
public String getDate()
{
Calendar cal=CalendargetInstance();//-0代表0天前这个时候的时间
caladd(CalendarDAY_OF_YEAR,-0);
SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
String nowtime=sdfformat(calgetTime());
return nowtime;
}
}
在你的JSP页面里面导入这个类,导入这个类的代码是：
<%@ page import= "comJavaBeanGetDate;"%>
再在JSP页面里创建这个类的对象。代码如下：
<% GetDate getdate=new GetDate(); %>
用这个对象里的方法获取时间，代码如下
<% String date=getdategetDate(); %>
再显示，代码如下：
<% outprintln(date); %>
朋友试试，这是本人现写的，，我试过了没什么问题。
MessageDigest digest = MessageDigestgetInstance("MD5");
digestupdate("dinghua"getBytes());
String pwd = new String(digestdigest());
<%@page pageEncoding="utf-8"%>
<html>
<head>
<title>JS日期选择器</title>
<script type="text/javascript">
function HS_DateAdd(interval,number,date){
number = parseInt(number);
if (typeof(date)=="string"){var date = new Date(datesplit("-")[0],datesplit("-")[1],datesplit("-")[2])}
if (typeof(date)=="object"){var date = date}
switch(interval){
case "y":return new Date(dategetFullYear()+number,dategetMonth(),dategetDate()); break;
case "m":return new Date(dategetFullYear(),dategetMonth()+number,checkDate(dategetFullYear(),dategetMonth()+number,dategetDate())); break;
case "d":return new Date(dategetFullYear(),dategetMonth(),dategetDate()+number); break;
case "w":return new Date(dategetFullYear(),dategetMonth(),7number+dategetDate()); break;
}
}
function checkDate(year,month,date){
var enddate = ["31","28","31","30","31","30","31","31","30","31","30","31"];
var returnDate = "";
if (year%4==0){enddate[1]="29"}
if (date>enddate[month]){returnDate = enddate[month]}else{returnDate = date}
return returnDate;
}
function WeekDay(date){
var theDate;
if (typeof(date)=="string"){theDate = new Date(datesplit("-")[0],datesplit("-")[1],datesplit("-")[2]);}
if (typeof(date)=="object"){theDate = date}
return theDategetDay();
}
function HS_calender(){
var lis = "";
var style = "";
style +="<style type='text/css'>";
style +="calender { width:170px; height:auto; font-size:12px; margin-right:14px; background:url(calenderbggif) no-repeat right center #fff; border:1px solid #397EAE; padding:1px}";
style +="calender ul {list-style-type:none; margin:0; padding:0;}";
style +="calender day { background-color:#EDF5FF; height:20px;}";
style +="calender day li,calender date li{ float:left; width:14%; height:20px; line-height:20px; text-align:center}";
style +="calender li a { text-decoration:none; font-family:Tahoma; font-size:11px; color:#333}";
style +="calender li a:hover { color:#f30; text-decoration:underline}";
style +="calender li ahasArticle {font-weight:bold; color:#f60 !important}";
style +="lastMonthDate, nextMonthDate {color:#bbb;font-size:11px}";
style +="selectThisYear a, selectThisMonth a{text-decoration:none; margin:0 2px; color:#000; font-weight:bold}";
style +="calender LastMonth, calender NextMonth{ text-decoration:none; color:#000; font-size:18px; font-weight:bold; line-height:16px;}";
style +="calender LastMonth { float:left;}";
style +="calender NextMonth { float:right;}";
style +="calenderBody {clear:both}";
style +="calenderTitle {text-align:center;height:20px; line-height:20px; clear:both}";
style +="today { background-color:#ffffaa;border:1px solid #f60; padding:2px}";
style +="today a { color:#f30; }";
style +="calenderBottom {clear:both; border-top:1px solid #ddd; padding: 3px 0; text-align:left}";
style +="calenderBottom a {text-decoration:none; margin:2px !important; font-weight:bold; color:#000}";
style +="calenderBottom acloseCalender{float:right}";
style +="closeCalenderBox {float:right; border:1px solid #000; background:#fff; font-size:9px; width:11px; height:11px; line-height:11px; text-align:center;overflow:hidden; font-weight:normal !important}";
style +="</style>";
var now;
if (typeof(arguments[0])=="string"){
selectDate = arguments[0]split("-");
var year = selectDate[0];
var month = parseInt(selectDate[1])-1+"";
var date = selectDate[2];
now = new Date(year,month,date);
}else if (typeof(arguments[0])=="object"){
now = arguments[0];
}
var lastMonthEndDate = HS_DateAdd("d","-1",nowgetFullYear()+"-"+nowgetMonth()+"-01")getDate();
var lastMonthDate = WeekDay(nowgetFullYear()+"-"+nowgetMonth()+"-01");
var thisMonthLastDate = HS_DateAdd("d","-1",nowgetFullYear()+"-"+(parseInt(nowgetMonth())+1)toString()+"-01");
var thisMonthEndDate = thisMonthLastDategetDate();
var thisMonthEndDay = thisMonthLastDategetDay();
var todayObj = new Date();
today = todayObjgetFullYear()+"-"+todayObjgetMonth()+"-"+todayObjgetDate();
for (i=0; i<lastMonthDate; i++){ // Last Month's Date
lis = "<li class='lastMonthDate'>"+lastMonthEndDate+"</li>" + lis;
lastMonthEndDate--;
}
for (i=1; i<=thisMonthEndDate; i++){ // Current Month's Date
if(today == nowgetFullYear()+"-"+nowgetMonth()+"-"+i){
var todayString = nowgetFullYear()+"-"+(parseInt(nowgetMonth())+1)toString()+"-"+i;
lis += "<li><a href=javascript:void(0) class='today' onclick='_selectThisDay(this)' title='"+nowgetFullYear()+"-"+(parseInt(nowgetMonth())+1)+"-"+i+"'>"+i+"</a></li>";
}else{
lis += "<li><a href=javascript:void(0) onclick='_selectThisDay(this)' title='"+nowgetFullYear()+"-"+(parseInt(nowgetMonth())+1)+"-"+i+"'>"+i+"</a></li>";
}
}
var j=1;
for (i=thisMonthEndDay; i<6; i++){ // Next Month's Date
lis += "<li class='nextMonthDate'>"+j+"</li>";
j++;
}
lis += style;
var CalenderTitle = "<a href='javascript:void(0)' class='NextMonth' onclick=HS_calender(HS_DateAdd('m',1,'"+nowgetFullYear()+"-"+nowgetMonth()+"-"+nowgetDate()+"'),this) title='Next Month'>»</a>";
CalenderTitle += "<a href='javascript:void(0)' class='LastMonth' onclick=HS_calender(HS_DateAdd('m',-1,'"+nowgetFullYear()+"-"+nowgetMonth()+"-"+nowgetDate()+"'),this) title='Previous Month'>«</a>";
CalenderTitle += "<span class='selectThisYear'><a href='javascript:void(0)' onclick='CalenderselectYear(this)' title='Click here to select other year' >"+nowgetFullYear()+"</a></span>年<span class='selectThisMonth'><a href='javascript:void(0)' onclick='CalenderselectMonth(this)' title='Click here to select other month'>"+(parseInt(nowgetMonth())+1)toString()+"</a></span>月";
if (argumentslength>1){
arguments[1]parentNodeparentNodegetElementsByTagName("ul")[1]innerHTML = lis;
arguments[1]parentNodeinnerHTML = CalenderTitle;
}else{
var CalenderBox = style+"<div class='calender'><div class='calenderTitle'>"+CalenderTitle+"</div><div class='calenderBody'><ul class='day'><li>日</li><li>一</li><li>二</li><li>三</li><li>四</li><li>五</li><li>六</li></ul><ul class='date' id='thisMonthDate'>"+lis+"</ul></div><div class='calenderBottom'><a href='javascript:void(0)' class='closeCalender' onclick='closeCalender(this)'>×</a><span><span><a href=javascript:void(0) onclick='_selectThisDay(this)' title='"+todayString+"'>Today</a></span></span></div></div>";
return CalenderBox;
}
}
function _selectThisDay(d){
var boxObj = dparentNodeparentNodeparentNodeparentNodeparentNode;
boxObjtargetObjvalue = dtitle;
boxObjparentNoderemoveChild(boxObj);
}
function closeCalender(d){
var boxObj = dparentNodeparentNodeparentNode;
boxObjparentNoderemoveChild(boxObj);
}
function CalenderselectYear(obj){
var opt = "";
var thisYear = objinnerHTML;
for (i=1970; i<=2020; i++){
if (i==thisYear){
opt += "<option value="+i+" selected>"+i+"</option>";
}else{
opt += "<option value="+i+">"+i+"</option>";
}
}
opt = "<select onblur='selectThisYear(this)' onchange='selectThisYear(this)' style='font-size:11px'>"+opt+"</select>";
objparentNodeinnerHTML = opt;
}
function selectThisYear(obj){
HS_calender(objvalue+"-"+objparentNodeparentNodegetElementsByTagName("span")[1]getElementsByTagName("a")[0]innerHTML+"-1",objparentNode);
}
function CalenderselectMonth(obj){
var opt = "";
var thisMonth = objinnerHTML;
for (i=1; i<=12; i++){
if (i==thisMonth){
opt += "<option value="+i+" selected>"+i+"</option>";
}else{
opt += "<option value="+i+">"+i+"</option>";
}
}
opt = "<select onblur='selectThisMonth(this)' onchange='selectThisMonth(this)' style='font-size:11px'>"+opt+"</select>";
objparentNodeinnerHTML = opt;
}
function selectThisMonth(obj){
HS_calender(objparentNodeparentNodegetElementsByTagName("span")[0]getElementsByTagName("a")[0]innerHTML+"-"+objvalue+"-1",objparentNode);
}
function HS_setDate(inputObj){
var calenderObj = documentcreateElement("span");
calenderObjinnerHTML = HS_calender(new Date());
calenderObjstyleposition = "absolute";
calenderObjtargetObj = inputObj;
inputObjparentNodeinsertBefore(calenderObj,inputObjnextSibling);
}
</script>
<style>
body {font-size:12px}
td {text-align:center}
h1 {font-size:26px;}
h4 {font-size:16px;}
em {color:#999; margin:0 10px; font-size:11px; display:block}
</style>
</head>
<body>
<h1>Date Picker Demo By Codefansnet</h1>
<h4 style="border-bottom:1px solid #ccc">ver:10</h4>
<table border="1" width="400" height="150">
<tr>
<td>这是示例文字</td>
<td>示例输入框</td>
<td>文本文本文本</td>
</tr>
<tr>
<td>示例输入框</td>
<td><input type="text" style="width:70px" onfocus="HS_setDate(this)">文本</td>
<td>这里是你的文字</td>
</tr>
<tr>
<td>一段文字</td>
<td>示例输入框</td>
<td>文本<input type="text" style="width:70px" onfocus="HS_setDate(this)">文本</td>
</tr>
</table>
<ul>
<li>它不需要其他框架类支持</li>
<li>支持多种浏览器</li>
<li>点击年份、月份可下拉选择</li>
</ul>
</body>
</html>
设置当前时间的思路就是先通过java方法获取到当前的时间，之后直接赋值给jsp中“input”中
举例：
<%
SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
String date= formatformat(new Date());
%>
<body>
<input type="text" value="<%=date%>"/>
</body>
解释：由于jsp中会先加载上面的java代码，之后在顺序加载jsp页面代码，所以date值就会显示出获取的当前时间。
select 后面的 星是代表全部的意思 你只要 把你要把 换成你要查的字段 就好了 说明你获取的时间 和String start="2009-02-1";
String end="2009-02-23";
不一样 你把获取的时间 通过时间API Date 转换一下 试试
jsp中的时间控件输出的日期都是字符串的，要转换成日期格式才能比较大小。
利用js方式比较大小，然后在jsp页面输出：
参考代码：
var beginTime = "2009-09-21 00:00:00";
var endTime = "2009-09-21 00:00:01";
var beginTimes = beginTimesubstring(0, 10)split('-');
var endTimes = endTimesubstring(0, 10)split('-');
beginTime = beginTimes[1] + '-' + beginTimes[2] + '-' + beginTimes[0] + ' ' + beginTimesubstring(10, 19);
endTime = endTimes[1] + '-' + endTimes[2] + '-' + endTimes[0] + ' ' + endTimesubstring(10, 19);
alert(beginTime + "aaa" + endTime);
alert(Dateparse(endTime));
alert(Dateparse(beginTime));
var a = (Dateparse(endTime) - Dateparse(beginTime)) / 3600 / 1000;
if (a < 0) {
alert("endTime小!");
} else if (a > 0) {
alert("endTime大!");
} else if (a == 0) {
alert("时间相等!");
} else {
return 'exception'
}
以上就是关于jsp获取参数DATE类型全部的内容，包括:jsp获取参数DATE类型、着急：在jsp中或的当前年月日，并在jsp中显示前几天和后几天的日期，并把这些时间存入数据库中，、jsp页面中如何利用java程序输出一个系统日期，显示在该jsp页面中等相关内容解答，如果想了解更多相关内容，可以关注我们，你们的支持是我们更新的动力！
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